Rotary harrow



(No Model.) 2 Sheets-Sheet 1.

W. A. & B. J. SMITH.

ROTARY HARROW. No. 392,697. Patented Nov. 13, 1888.

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WILLIAM ASA SMITH, OF POTTAWATOMIE, AND BENJAMIN JOSEPH SMITH,

OF MELVERN, KANSAS.

ROTARY HARROW.

SPECIFICATION forming part of Letters Patent No. 392,697, dated November 13, 1888.

Application filed August 10, 1888. Serial No. 282,429. (No model.)

To aZZ whom it may concern:

Be it known that we, WILLIAM Asa SMITH, and BENJAMIN Josnra SMITH, citizens of the United States, residing, respectively, at Pottawatomie and Melvern, in the counties of Coffey and Osage and State of Kansas, have invented a new and useful Improvement in R0- tary Harrows,of which the following is a specification. e [O The invention relates to improvements in rotary harrows; and it consists in the construction and novel combination of parts hereinafter described, illustrated in the drawings, and pointed out in the claims hereto appended.

Figure l of the drawings represents a front view of a harrow embodying the invention. Fig. 2 represents a plan view of the harrow. Fig. 3 represents a side view thereof.

Referring to the drawings by letter, A designates the hounds of the harrow, which diverge rearwardly and are connected asuitable distance from their front ends by the springmetal strap B, having the vertical arch b. The

hounds are also connected at their rear ends by the similar lateral bars, 0, that are secured to their under surfaces, and the spring-metal strap a, secured to the ends of said bars between the hounds and provided with the ver tical arch c.

D D are the handles secured to the inner surfaces of the hounds and to the tops of the vertical standards (Z, that rise from the bars 0 near the inner ends thereof on each side of the arch c, and are connected by a crossbar 3 5 in the usual manner.

(1 d are brace-bars extending from the hounds to the bars 0 on the outer sides of the hounds.

E is the tongue, having a neck bar or yoke swiveled to its front end and secured near its heel to the upright arch f of the transverse shaft F, which is journaled in bearings f secured to the hounds near the front ends thereof; and f f are brace-rods having their front 5 ends secured to the sides of the tongue at opposite points and their rear ends hooked or bent around the shaft F outside of the bearings f.

G is the whiffletree, pivoted upon the heel of the tongue and to a metal strap secured thereto, and H H are similar upright metal bars,

which have their upper ends perforated and engaged on the metal loops h,that pass through staples secured to the rear side of the whiffletree G, near the ends thereof. 5 5

h h are brace-bars having their rear ends attached to the hounds and their front ends looped around the ends of the shaft F outside of the bars H, which are provided with the series of adj listing-openings If, for attachment to the shaft F, and have the singletrees I swiveled in perforations in their lower ends.

J J are metal arms depending from the front ends of the hounds and from the outer arms of the bars 0, and provided near their lower ends 6 5 with bearing-openings for the journal of the barrow-rollers K, which have the outstanding radial teeth is, about thirty in number on each roller.

It is evident that as the harrow is drawn forward the engagement of the teeth in the soil will cause the rollers to rotate and the rearward divergence of the rollers will cause them to work over a broad space of ground. The metal archesband c,which connect the hounds, act as springs and permit the rollers. to move inward or outward when any of the teeth meet obstructions, so that the harrow will move easily forward and there will be little danger of breaking the teeth. The rearward diver- E0 gence of the rollers aids also in keeping the harrow aligned as it moves forward, as said divergence produces an equal resistance on each side to departure from the line of motion. The horses on each side of the tongue can be hitched to the neck bar or yoke e at the front end of the tongue and the singletrees I below the heel thereof, and the connections of the said singletrees to the whiifletree G will equalize the draft. 9

By means of the arched and journaled shaft F, thelink or loops h, and the adj usting-openings h in the bars H, the tongue can be set at different angles to the hounds and the teeth caused to penetrate more or less deeply in the soil.

Having described our invention, we claim 1. In a harrow, the combination of the diverging hounds A, the inetalstraps having the vertical spring-arches connectingthefront and rear ends of the hounds, the bars 0, projecting outward from the rear ends of the hounds, and

the toothed rollers jonrnaled in bearings de pending from the front ends of the hounds and the outer ends of bars 0, substantially as described.

2. In a barrow, the combination of the rearwardly-diverging hounds, the transverse bars 0, secured to the rear ends thereof, the metal strap 0, connecting the inner ends of said bars and provided with the spring-arch c,the metal strap l3,connect-ingthehounds near their front ends and provided with the spring-arch '1), the arms J, depending from the front ends of the bars 0, and the barrow-rollers having suitable teeth and journaled at the ends in said depending arms, substantially as specified.

3. In a harrow, the combination of the tongue, the whiffletree pivoted to the tongue, the transverse shaft F, journaled in bearings of the hounds, the adjustable side bars, H, connected to the ends of the whiffletree and pivoted on the ends of the shaft F, and the sin- WILLIAM Asa SMITH. BENJAMIN JOSEPH snrrn.

\Vitnesscs:

DAVID HU'ronnsoN, ED. CAMPBELL. 

